Dry-friction damping in vibrating systems, theory and application to the bladed disc assembly
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00509043" target="_blank" >RIV/61388998:_____/19:00509043 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23520/19:43954780
Result on the web
<a href="http://dx.doi.org/10.1007/978-3-030-13317-7_6" target="_blank" >http://dx.doi.org/10.1007/978-3-030-13317-7_6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-030-13317-7_6" target="_blank" >10.1007/978-3-030-13317-7_6</a>
Alternative languages
Result language
angličtina
Original language name
Dry-friction damping in vibrating systems, theory and application to the bladed disc assembly
Original language description
The chapter deals with a dry friction damping on the dynamics of model blade systems. The main empahsis is to the solution of damping effects of dry friction contacts in tie-bosses and shrouds. Friction is considered herein from phenomenological view. The variety of modified dry-friction models and results of their equivalent linearization are presented at the beginning. Then numerical models, i.e. discrete analytical, reduced and full finite element, used in our research of non-linear dynamic behavior, of the blade cascades and bladed wheel with dry friction contacts are discussed. Dynamics states, such as resonant vibration, free attenuation, self-excitation, are considered. The detail dynamic analysis of non-linear behavior of these systems due to dry-friction contacts is presented for discrete analytical model with the stick-slip friction contact. Furthermore, the solution of the blade bundle dynamics with the tie-boss coupling by the 3D FE model with surface to surface contacts is described. Because of the rotary periodicity, the bladed wheels bring special resonant vibration mode, i.e. travelling wave mode, in dependence on a type of wheel excitation, the dynamic responses of the wheel to nozzle excitation and self-excitation are studied, too. For validation purposes, we describe the experiments and their results on blade bundles with the two types of dry friction coupling. The comparisons with the numerical results show that in spite of simplifications in the modelling of the dry-friction contacts, the used numerical models can deliver very useful information about additional stiffness, damping and stabilization effect.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/GA16-04546S" target="_blank" >GA16-04546S: Aero-elastic couplings and dynamic behaviour of rotational periodic bodies</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Nonlinear Structural Dynamics and Damping
ISBN
978-3-030-13316-0
Number of pages of the result
90
Pages from-to
169-259
Number of pages of the book
320
Publisher name
Springer Netherlands
Place of publication
Haarlem
UT code for WoS chapter
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